Ensure smooth, reliable opening and support of your vehicle’s rear tailgate with these Electric Tailgate Support Struts (OEM 8370354AA) — precision-engineered replacements for vehicles equipped with power-lift tailgate systems such as certain BMW, Jaguar F-Pace and similar models. Electric tailgate struts provide powered assistance to raise and hold the tailgate securely in its open position, preventing it from slowly sagging or slamming shut under its own weight. Over time, electric struts can lose pressure, fail, or make unusual noises as seals and internal components wear, making lifting or closing the tailgate difficult or unsafe. Replacing them with these high-quality support struts from DDP Autoparts restores effortless tailgate operation and enhances convenience, safety and everyday usability.

OEM Number: HK8370354AA, T4A1144, T4A34990, HK83-70354-AA

Product details:

Placement on Vehicle : Rear Left & Right, Passenger Side and Driver Side

Length : 642 mm

Stroke : 190 mm

Quantity : 2 

Our SKU: TJAGHK8370354AAx2_313

All our Electric Boot Tailgate Support Struts Gas Springs are OEM quality and reliable after market car parts. This Electric Boot Tailgate Support Struts Gas Springs is specifically compatible with .

Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.

If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.

❓ Frequently Asked Questions (FAQ)

Q: What do electric tailgate support struts do?
A: Electric tailgate struts assist in raising and holding the tailgate open using motor-assisted or gas-assisted force, reducing effort and preventing the tailgate from dropping unexpectedly.

Q: Which vehicles is OEM 8370354AA compatible with?
A: This part number (8370354AA / HK83-70354-AA / T4A1144 / T4A34990) is commonly used as the rear electric tailgate lift support on certain Jaguar F-Pace X761 (2016–2018) models and may fit other vehicles with similar electric tailgate systems — always check vehicle fitment before ordering.

Q: What are common symptoms of failing tailgate struts?
A: Typical signs include:

• Tailgate doesn’t stay fully open or slowly sags.

• Difficult opening or closing of the tailgate.

• Strange noises (hissing, squeaking) from the strut area when lifting.

• Tailgate power-lift operates intermittently or stops mid-movement.

Q: Can I replace electric tailgate struts myself?
A: Yes — many replacement tailgate struts are designed for plug-and-play or mount-and-bolt fitment. However, take care to support the tailgate during installation to prevent injury or damage.

Q: Should I replace both struts at the same time?
A: It’s generally recommended to replace both left and right struts together if one has failed, as the opposite side may also be weakened and replacing only one can lead to uneven support and faster wear on the remaining strut.

Q: Will replacing the strut fix automatic tailgate issues?
A: If the symptom is due to worn or weak struts (tailgate not staying open, power lift struggling), then yes — new struts typically restore proper tailgate support. If power electronics or sensors are at fault, further diagnosis may be needed.

Q: How do I know I need a replacement and not just a gas strut?
A: Electric tailgate systems typically use powered struts with sensors and motor assistance. If your vehicle has a power lift tailgate and you experience sagging, difficulty or jerky movement, replacing the correct electric support strut (not manual gas strut) is essential for proper operation.